public class ZhaiZhiJie01
{
    public static void main(String[] args) {
        X x = new X();
        x.say();
        x.print();
    }
}

interface A
{
    public String AUTHOR = "lixinghua";
    public void print();
    public String getInfo();
}

interface B
{
    public void say();
}

class X implements A,B
{
    public void say()
    {
        System.out.println("Hello World");
    }
    public String getInfo()
    {
        return "HELLO";
    }
    public void print()
    {
        System.out.println("作者：" + AUTHOR);
    }
}
